高二英语“学议练探”学案M5U2WelcometotheunitTeachingaims:(1)Makestudentspayattentiontotheenvironmentaroundrealizetheproblemscausedbyhumanactivity.(2)Encourageandhelpstudentstothinkofthesolutionstosolvingtheproblems(3)PracticetheirspeakingabilitybydiscussingingroupsImportantpoints&difficultpoints:(1)StudentsareexpectedtoexpresstheirownopinionsonprotectingtheenvironmentinEnglish(2)Howtoencouragestudentstospeakfreely.Part1PreviewThinkingbeforeclass(1)Whenwetalkaboutthe“environment”,whatwordswillcometoyourmind?Suggestedanswer:harmonious/peaceful/destructive/pollution/disaster/protection/environmentalist(2)Whatkindofnaturaldisastersdoyouknow?Suggestedanswers:flood/drought/acidrain/desertification/tsunami/volcanoPart2StudyinclassStep1BrainstormingT:Tellthestudentswhattheywilllearninthisperiodandletthempayattentiontothetitleoftheunit.Askthemthinkaboutwhatwillbediscussedinthisunit.(Thiscanfocustheirattentiononthethemeofthisunit.Tcanletthemexchangetheirinformationwiththeirdeskmate.Anyrelatedanswersarecollectedsomeonblackboard)T:(Verygood!)Tellthestudentstheearthistheonlyplanetinthesolarsystemwhichhumanbeingscanliveon.Anditisalsothemostbeautifuloneintheeight1高二英语“学议练探”学案M5U2planets.Thenletthemthinkaboutthefollowingquestions:Whatisyourpictureofearthinyourmind?(AfterthisquestionTcanletthemwatchashortvideotohelpthemgoonwiththenextsteps)Whataretheenvironmentalproblemsinyourlivingsurroundings?Doyouthinkahealthyenvironmentisimportantfourhumanbeings?Why?(Letthemusesomewordstodescribetheearthandrelatethetopictotheirdailylife.)Step2DiscussionT:Tellthestudentstheywilllearnsomethingmoreabouttheenvironmentalproblemsandthecausesofthem.Thenaskstudentstolookatthepicturesinthebook.Askthemtellwhattheycanseeinthesepictures.IftheyhaveanydifficultiesTcangivethemahand.Laterletthemanswerthequestion:Whichonesarecausedbynatureandwhichonesarecausedbyman?(Rubbish,smoke,cutting,waterpollutionarecausedbymanandtheothersbynature.)Step3FurtherdiscussionT:Tellthestudentsbesidesnaturaldisasters,theearthisnowfacingotherproblemscausedbypeople.Thenaskthemtolookatthescreen.Thepictureisaboutsomewaysinwhichpeopledamagetheenvironment.Letthemthinkaboutthequestionbelow.Canyouthinkofotherwaysinwhichpeopledamagetheenvironment?(airpollution,etc)(Letstudentssharetheirinformationinpairsandshowthemonthescreen.Thismayhelpthemtorealizesomeirresponsiblehumanactivity.)T:Tellthestudentstheenvironmentalproblemsarebecomingmoreandmoreserious,especiallytheincreasingrubbish,cuttingtrees,waterpollutionandairpollution.Laterletthemthinkaboutthefollowingquestion:Whatarethecausesandresultsoftheseenvironmentalproblems?(Meanwhileshowthemsomerelevantpictureswhichmaygivethemahand.)2高二英语“学议练探”学案M5U2T:Afterthediscussion,collectsomekeywordsinthefollowingtableandshowitonthescreen.Inthisway,thestudentscanhaveageneralideaofwhattheyhavetalkedaboutjustnow.thisstepalsohelpstudentsgetreadyforthelaststep.ProblemsCausesResultsRubbishpourwaste,un-reusedproducts,etc.dirty,ugly,dangerous,causediseases,etc.Cuttingtreesmeetpeople’sneeds,makewoodenproducts,etc.losewaterandsoil,desertification,badweather,etcWaterPollutionpourwaste,throwrubbish,etcnoenoughdrinkingwater,getpeoplesick,etcAirpollutiongiveoffwastegas,burncoalandoil,etccausediseasesanddeaths,dirty,causeacidrain,etcT:Afterthisletthestudentsconsiderthequestionbelow.A...
